03979122 is referenced by 167 patents and cites 16 patents.
Improved golf clubs having metal heads, conventionally known as "irons", and processes for producing such "irons" in such a way that the swing weight of each "iron" produced can be varied within very close tolerances and/or the distribution of the weight of the metal head, i.e. the balance thereof, can be rendered adjustable by the user so as to overcome problems of "slicing" or "hooking" of the golf ball during use.